/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.servicecomb.darklaunch;

import java.util.HashMap;
import java.util.Map;

import org.apache.servicecomb.registry.api.registry.Microservice;
import org.apache.servicecomb.serviceregistry.RegistryUtils;

public final class MicroserviceCache {
  private static MicroserviceCache instance = new MicroserviceCache();

  private Map<String, Microservice> services = new HashMap<>();

  private MicroserviceCache() {
  }

  public static MicroserviceCache getInstance() {
    return instance;
  }

  public Microservice getService(String serviceId) {
    Microservice microservice = services.computeIfAbsent(serviceId, (k) -> {
      return RegistryUtils.getMicroservice(serviceId);
    });
    return microservice;
  }
}
